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404425001 is a prime number
BaseRepresentation
bin11000000110110…
…000100100101001
31001011222220210202
4120012300210221
51312013100001
6104044121545
713010361431
oct3006604451
91034886722
10404425001
11198318542
12b35362b5
1365a30746
143b9d72c1
152578996b
hex181b0929

404425001 has 2 divisors, whose sum is σ = 404425002. Its totient is φ = 404425000.

The previous prime is 404424991. The next prime is 404425003. The reversal of 404425001 is 100524404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 291555625 + 112869376 = 17075^2 + 10624^2 .

It is a cyclic number.

It is not a de Polignac number, because 404425001 - 210 = 404423977 is a prime.

Together with 404425003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (404425003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202212500 + 202212501.

It is an arithmetic number, because the mean of its divisors is an integer number (202212501).

Almost surely, 2404425001 is an apocalyptic number.

It is an amenable number.

404425001 is a deficient number, since it is larger than the sum of its proper divisors (1).

404425001 is an equidigital number, since it uses as much as digits as its factorization.

404425001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 404425001 is about 20110.3207582574. The cubic root of 404425001 is about 739.5133158527.

Adding to 404425001 its reverse (100524404), we get a palindrome (504949405).

The spelling of 404425001 in words is "four hundred four million, four hundred twenty-five thousand, one".